Product Data Sheet 1.5 WATT UNREGULATED DC/DC CONVERTERS DC/DC CONVERTER PWR1726A/PWR1726A1 FEATURES 8000V ISOLATION TEST VOLTAGE  NO EXTERNAL PARTS REQUIRED  SYNCHRONIZABLE  REMOTE ON/OFF  LOW-BARRIER CAPACITANCE  APPLICATIONS BIOMEDICAL DATA ACQUISITION  INDUSTRIAL PROCESS EQUIPMENT  DATA ACQUISITION  TEST EQUIPMENT  PORTABLE EQUIPMENT  DESCRIPTION The PWR1726A/PWR1726A1 is a single-channel, dual- accomplished simply by connecting the sync pin of one output DC/DC/ converter designed for those applications unit to the sync pin of another unit. In this manner, up to where high-isolation voltage and low-barrier capacitance eight converters may be ganged together. are critical for system reliability and integrity. The PWR1726A/PWR1726A1 provides a plus and minus Calculated mean-time-to-failure (MTTF) is in excess of output voltage that is approximately equal to the magnitude 100 years at an ambient temperature of +25°C and at rated of the input voltage. The unit operates over an input output power. The performance of the PWR1726A/ voltage range of 7VDC to 16VDC. PWR1726A1 is not derated over its entire specified Each PWR1726A/PWR1726A1 isolation barrier is tested temperature range of -25°C to +85°C. per the method set forth by UL544, VDE750, and CSA Synchronization of the PWR1726A/PWR1726A1 may be C22.2. Power Electronics Division, United States C&D Technologies, (NCL) 3400 E Britannia Drive, Tucson, Arizona 85706 Tanners Drive Blakelands North Phone: 800.547.2537 Milton Keynes MK14 5BU UK Fax: 520.770.9369 Tel: +44 (0)1908 615232 Fax: +44 (0)1908 617545 Any data, prices, descriptions or specifications presented herein are subject to revision by C&D Technologies, Inc. without notice. While such information is believed to be accurate as indicated herein, C&D Technologies, Inc. makes no warranty and hereby disclaims all warranties, express or implied, with regard to the accuracy or completeness of such information. Further, because the product(s) featured herein may be used under conditions beyond its control, C&D Technologies, Inc. hereby disclaims all warranties, either express or implied, concerning the fitness or suitability of such product(s) for any particular use or in any specific application or arising from any course of dealing or usage of trade. The user is solely responsible for determining the suitability of the product(s) featured herein for user’s intended purpose and in user’s specific application. C&D Technologies, Inc. does not warrant or recommend that any of its products be used in any life support or aviation or aerospace applications. PWR1726A / A1 4/2002 REV B Page 1 COMMON SPECIFICATIONS Specifications typical at T = +25°C, V = 15VDC, I = ±50mA and in free-running mode unless otherwise noted. A IN LOAD PARAMETER CONDITIONS MIN TYP MAX UNITS INPUT Rated Voltage 12 VDC Voltage Range 7 16 VDC Input Current I = 0 30 mA LOAD I = Rated Load 145 165 mA LOAD Short Circuit 115 mA Ripple Current I = Rated Load 15 mAp-p LOAD ISOLATION Voltage Rated Continuous AC, 60Hz 3500 Vrms DC 5000 VDC Test Voltage 60sec, 60Hz 8000 Vpk Resistance 10 GΩ Capacitance 10 pF Leakage Current V = 240VAC, 60Hz 1 2 µA ISO OUTPUT Rated Voltage I = Rated Load ±15 VDC LOAD Voltage Range I Rated Load ±14.25 ±15.75 VDC LOAD I = OmA ±16.0 ±16.5 ±18.0 VDC LOAD Rated Current Balanced Loads ±50 mA Current Range Balanced Loads 0 ±90 mA Single Ended 0 180 mA Line Regulation 7VDC < V < 18VDC 1.16 mV/mV IN Load Regulation No Load < I < ±50mA 0.3 %/mA OUT Ripple Voltage BW = DC to 10MHz I = 0 15 mVp-p LOAD I = Rated Load 50 mVp-p LOAD Sync Out (PWR1726-A1 only) Vin = 12VDC, Vout = Rated, Balanced 30 Vp-p (referenced to common) GENERAL MTTF Calculated per MIL - HDBK - 217 Rev. E Ground, Benign 25° C 1.2 MHr Switching Frequency 120 kHz TEMPERATURE Specification -25 +25 +85 °C Operation -40 +100 °C Storage -55 +110 °C NOTE: Other input and output voltages may be available upon request. Please consult the factory. MECHANICAL TOP VIEW SIDE VIEW NOTES: 0.405±0.010" (10.29) All dimensions are in inches PWR1726A (millimeters). GRID: 0.100 inches (2.54 PWR1726A1 0.032±.003" 0.130" millimeters) MIN (.81±.05) (3.30) 0.100" PIN PLACEMENT TOLERANCE: 0.075" (2.538) (1.904) 1.300" ±0.015" (32.99) MATERIAL: Units are encapsulated 1 415 16 1.650±.015" in a low thermal resistance molding (41.91±0.38) compound which has excellent chemical resistance, wide operat- ing temperature range, and good electrical properties under high hu- PIN CONNECTIONS midity environments. The encapsu- 1 -Vout lant and outer shell of the unit have 14 -Vin UL94V-0 ratings. Lead material is 15 SYNC brass with a solder plated surface to 16 +Vin 32 30 29 18 allow ease of solderability. 0.075" 1.200" 18 REMOTE ON/OFF (1.904) (30.46) 0.200" 29 SYNC OUT (PWR1726A1) (5.08) 30 COMMON 32 +Vout BOTTOM VIEW Page 2 PWR1726A / A1 4/2002 REV B 1.125±0.015" (28.58±0.38) 0.900" (22.84) 0.1125" (.32) ABSOLUTE MAXIMUM RATINGS ORDERING INFORMATION Input Voltage .........................................................................18VDC PWR 1726A 1 Output Short-Circuit Duration ................................................... Continuous Device Family Internal Power Dissipation ..................................................................... 2W PWR indicates DC/DC converter Lead Temperature (soldering, 10 seconds max) ............................ +300°C Model Number Sync Out TYPICAL PERFORMANCE CURVES 0 TA=+25 C, Rated Input Voltage, Rated Output Current unless otherwise noted OUTPUT VOLTAGE VS. OUTPUT CURRENT OUTPUT VOLTAGE VS. INPUT VOLTAGE Output Current (mA) Input Voltage (VDC) REMOTE ON/OFF CONTROL SYNCHRONIZATION INFORMATION If no connection is made The unit may be synchronized to an external clock. Recommended to "Remote ON/OFF" frequency is a minimum of 110KHz and a maximum of 250KHz. The pin, the converter will sync signal must be a square wave pulse with a peak of 7.5V min to operate normally. 12.0V max, the amplitude being referenced to -Vin. Input Voltage (VDC) PWR1726A / A1 4/2002 REV B Page 3 Output Voltage (VDC) Remote On/Off (VDC) Output Voltage (VDC) ENGINEERING NOTES Page 4 PWR1726A / A1 4/2002 REV B